While the Nexus 9 does have front-facing speakers, sometimes you want a bit more sound. Perhaps to be immersed in the game or movie you're playing or watching. That's where Bluetooth Speakers come in, and there's a ton of great ones out there.
Ultimate Ears BOOM Wireless Bluetooth Speaker
This is one of my all-time favorite speakers. I've had this for nearly a year and still use it everyday. It doesn't take up much space, has amazing sound quality and the battery lasts forever! It's going for about $199 right now.
Logitech UE 984-000294 Mobile Boombox Bluetooth Speaker and Speakerphone
This is another one of my favorite speakers. It's a smaller version of the UE Boom speaker above, but less than half the price and still has amazing sound quality. The battery also lasts forever and it going for about $85. It's also got NFC inside which is a big deal for some people.
Bose SoundLink Bluetooth Speaker III
Connects wirelessly to your smartphone, tablet or other Bluetooth device. Sound performance unlike any other mobile speaker this size. Curved edges and thin profile for easy grab-and-go portability. Silicone button panel protects from dirt and dust; Rechargeable battery plays up to 14 hours.
HMDX Audio HX-P230GY JAM Classic Bluetooth Wireless Speaker
Incredible sound quality in a small footprint. Connects wirelessly up to 30 feet away. Works with all Bluetooth-enabled devices: smart phones, tablets and more. Rechargeable for up to 4 hours of wireless play.
HMDX Rave Portable Rechargeable Wireless Speaker
Speakerphone functionality for your iPhone, Android smartphone, or bluetooth enabled device. Rechargeable battery lasts up to 4 hours. Wireless up to 30 feet. Aux-in jack for connecting non-bluetooth devices.
SuperToothZ004109E Disco2 A2DP Bluetooth Stereo Speaker
Bluetooth version 4.0^Operating range : 10 meters^High volume: 3 to 4 hours Medium volume: 10 hours^Stand-by time: 1,500 hours^Compatible with all other phones,. PCs, and MP3 players that support Bluetooth A2DP.. Bluetooth version 4.0. Operating range : 10 meters. High volume: 3 to 4 hours Medium volume: 10 hours. Stand-by time: 1,500 hours. Compatible with all other phones, PCs, and MP3 players that support Bluetooth A2DP.
Joyiqi Mini Portable Bluetooth Speaker
Bluetooth synchronous broadcasting function. Play music from Bluetooth devices including mobile phones, iPhone, iPod, iPad and Android Tablets, MP3/MP4 players, PC or MAC laptops PSP, etc. Supports TF card (Micro SD card) for playback from built-in MP3 player. Support A2DP, AVRCP, headset, hands free profile. This portable MiniTune Speaker comes with a built-in Li-Ion 450 mAH Rechargeable Battery for up to 5 hours of playtime.
Joyiqi Mini Portable Bluetooth Speaker, Alloy Steel Housing, Powerful Loud and Clear Sound with Bass. Reads Music From Sd Cards and Has Built in Mic. Works with All Iphone, Ipad, Itouch, Blackberry, Nexus, Samsung and All Phones and Mp3 Players. Speaker System Has Built in Rechargeable Battery